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A platform for research: civil engineering, architecture and urbanism
Structure for preventing subsidence of pavement around urban road drainage inspection well and construction method
The invention provides a structure for preventing subsidence of a pavement around an urban road drainage inspection well and a construction method. A roller compacted concrete layer is arranged aroundthe inspection well, the roller compacted concrete layer comprises an upper roller compacted concrete layer body and a lower roller compacted concrete layer body, the lower roller compacted concretelayer body is positioned above a bottom base layer of the pavement, the upper roller compacted concrete layer body is positioned below an asphalt concrete surface layer, the side surfaces of the upperroller compacted concrete layer body and the lower roller compacted concrete layer body abut against a semi-rigid base layer of the pavement, the upper roller compacted concrete layer body and the lower roller compacted concrete layer body are in a stepped shape, and the inspection well is located at the center of the roller compacted concrete layer. According to the structure and the construction method, roller compacted concrete is adopted to replace common concrete, the compressive strength and the flexural strength are improved, the dry shrinkage rate is reduced, and the uneven settlementresistance and adjustment capability is high; the construction operation is fast, the construction period is short, the maintenance time is short, and the investment of equipment and manpower is reduced; and fly ash is mixed into the roller compacted concrete, so that the fly ash is utilized while the cost is reduced, the environmental pollution is reduced, and higher social benefits are realized.
本发明提供一种防止城市道路排水检查井周围路面沉陷的结构及施工方法，检查井周围设置有碾压混凝土层，碾压混凝土层包括上层碾压混凝土和下层碾压混凝土,下层碾压混凝土位于路面的底基层上方,上层碾压混凝土位于沥青混凝土面层下方,上层碾压混凝土和下层碾压混凝土侧面与路面的半刚性基层抵接，上层碾压混凝土和下层碾压混凝土呈错台状，检查井位于碾压混凝土层中心位置,本发明采用了碾压混凝土代替普通混凝土，提高了抗压及抗折强度，降低了干缩率，抵抗和调节不均匀沉降能力强；施工作业快，工期短，养护时间短，降低了设备和人工的投入；碾压混凝土中掺入粉煤灰，在降低成本的同时使粉煤灰得到了利用，减少了环境污染，具有较高的社会效益。
Structure for preventing subsidence of pavement around urban road drainage inspection well and construction method
The invention provides a structure for preventing subsidence of a pavement around an urban road drainage inspection well and a construction method. A roller compacted concrete layer is arranged aroundthe inspection well, the roller compacted concrete layer comprises an upper roller compacted concrete layer body and a lower roller compacted concrete layer body, the lower roller compacted concretelayer body is positioned above a bottom base layer of the pavement, the upper roller compacted concrete layer body is positioned below an asphalt concrete surface layer, the side surfaces of the upperroller compacted concrete layer body and the lower roller compacted concrete layer body abut against a semi-rigid base layer of the pavement, the upper roller compacted concrete layer body and the lower roller compacted concrete layer body are in a stepped shape, and the inspection well is located at the center of the roller compacted concrete layer. According to the structure and the construction method, roller compacted concrete is adopted to replace common concrete, the compressive strength and the flexural strength are improved, the dry shrinkage rate is reduced, and the uneven settlementresistance and adjustment capability is high; the construction operation is fast, the construction period is short, the maintenance time is short, and the investment of equipment and manpower is reduced; and fly ash is mixed into the roller compacted concrete, so that the fly ash is utilized while the cost is reduced, the environmental pollution is reduced, and higher social benefits are realized.
本发明提供一种防止城市道路排水检查井周围路面沉陷的结构及施工方法，检查井周围设置有碾压混凝土层，碾压混凝土层包括上层碾压混凝土和下层碾压混凝土,下层碾压混凝土位于路面的底基层上方,上层碾压混凝土位于沥青混凝土面层下方,上层碾压混凝土和下层碾压混凝土侧面与路面的半刚性基层抵接，上层碾压混凝土和下层碾压混凝土呈错台状，检查井位于碾压混凝土层中心位置,本发明采用了碾压混凝土代替普通混凝土，提高了抗压及抗折强度，降低了干缩率，抵抗和调节不均匀沉降能力强；施工作业快，工期短，养护时间短，降低了设备和人工的投入；碾压混凝土中掺入粉煤灰，在降低成本的同时使粉煤灰得到了利用，减少了环境污染，具有较高的社会效益。
Structure for preventing subsidence of pavement around urban road drainage inspection well and construction method
一种防止城市道路排水检查井周围路面沉陷的结构及施工方法
BAI YAN (author) / LU ENCHENG (author) / WANG SHUAISHENG (author) / LI JIANLI (author)
2020-04-14
Patent
Electronic Resource
Chinese
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